My hangup is that I feel bad about posting to LiveJournal when I'm a month behind on everyone else's LiveJournal. And I've been a month behind for ... quite some time now. Time management, I do not haz it masterd. I've started posting to Facebook again only because I can mentally justify only reading the last 24 hours' worth of entries on there.

I know what you mean. I myself often go weeks without checking this site at all, let alone posting anything. And sometimes I feel guilty about that--about not responding to friends' posts, mostly. But after reading this post of yours, I'm inspired to give myself the same advice I'd give you (if I were the sort of person to give people advice): don't worry about it. LiveJournal's just a tool that you can use however you want.